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Variable correlation with participant interest in health-related email communication.
| Independent variable | Chi square test P value (degrees of freedom) |
| Concerned about privacy | <.001a (5) |
| Concerned about junk mail | .45 (4) |
| Email benefit | <.001a (4) |
| Frequently checks email | <.001a (4) |
| Forgetting appointments | .01b (5) |
| Overall satisfaction with current communication | .10 (4) |
aStatistically significant, P<.01.
bStatistically significant, P<.05.
